subrepent
/ˈsʌbriːpɛnt, ˈsʌbriːpɛnt/Definitions
1. verb
to repent or feel remorseful on someone else’s behalf, or to offer a substitute for repentance.
“The priest’s words made John feel the need to subrepent for his brother’s sins.”
2. noun
a person who offers or makes a substitute for repentance or penance.
“The subrepent was seen as a symbol of redemption in the community.”